/* Momentum — dark, mobile-first, thumb-friendly */
:root {
  --bg: #0b1220;
  --bg-raise: #121c30;
  --card: #16223a;
  --card-2: #1b2a47;
  --border: rgba(148, 163, 184, 0.14);
  --ink: #e6ecf7;
  --ink-2: #97a5bc;
  --ink-3: #64748b;
  --accent: #fbbf24;
  --accent-ink: #201503;
  --good: #34d399;
  --bad: #f87171;
  --bar-pos: #d97706; /* chart marks (validated on dark surface) */
  --bar-neg: #dc2626;
  --water: #38bdf8;
  --radius: 16px;
  --nav-h: 64px;
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-t: env(safe-area-inset-top, 0px);
}

* { box-sizing: border-box; margin: 0; padding: 0; -webkit-tap-highlight-color: transparent; }
html { height: 100%; }
body {
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.45;
  overscroll-behavior-y: none;
}
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, select, textarea { font: inherit; color: var(--ink); }
img { max-width: 100%; }
h1, h2, h3 { font-weight: 700; letter-spacing: -0.01em; }

#app { min-height: 100%; display: flex; flex-direction: column; }

/* ---------- login ---------- */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  padding: calc(24px + var(--safe-t)) 24px calc(24px + var(--safe-b));
  background: radial-gradient(120% 90% at 50% 0%, #1a2a4d 0%, var(--bg) 60%);
}
.login-card { width: 100%; max-width: 360px; text-align: center; }
.login-logo {
  width: 76px; height: 76px; margin: 0 auto 14px; border-radius: 22px;
  background: linear-gradient(180deg, #233150, #0b1220);
  display: flex; align-items: center; justify-content: center;
  border: 1px solid var(--border);
}
.login-logo svg { width: 42px; height: 42px; color: var(--accent); }
.login-card h1 { font-size: 28px; margin-bottom: 2px; }
.login-card .tagline { color: var(--ink-2); margin-bottom: 26px; font-size: 14.5px; }
.login-card form { display: flex; flex-direction: column; gap: 12px; text-align: left; }
.login-error { color: var(--bad); font-size: 14px; min-height: 20px; margin-top: 10px; }

/* ---------- app chrome ---------- */
.app-header {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 10px;
  padding: calc(14px + var(--safe-t)) 16px 10px;
  background: linear-gradient(180deg, rgba(11, 18, 32, 0.97), rgba(11, 18, 32, 0.88));
  backdrop-filter: blur(8px);
}
.app-header .title { font-size: 20px; font-weight: 800; flex: 1; display: flex; align-items: baseline; gap: 8px; }
.app-header .title small { color: var(--ink-3); font-size: 13px; font-weight: 600; }
.streak-chip {
  display: inline-flex; align-items: center; gap: 4px;
  color: #fb923c; font-weight: 700; font-size: 14px;
  background: rgba(251, 146, 60, 0.12); border-radius: 999px; padding: 4px 10px;
}
.streak-chip svg { width: 15px; height: 15px; }

main.view {
  flex: 1; padding: 4px 16px calc(var(--nav-h) + var(--safe-b) + 24px);
  width: 100%; max-width: 560px; margin: 0 auto;
}

.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 40;
  display: flex; justify-content: space-around;
  background: rgba(13, 20, 36, 0.97); backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  padding: 6px 4px calc(6px + var(--safe-b));
}
.bottom-nav button {
  flex: 1; max-width: 96px; display: flex; flex-direction: column; align-items: center; gap: 3px;
  color: var(--ink-3); font-size: 10.5px; font-weight: 600; padding: 6px 0; border-radius: 12px;
  min-height: 48px;
}
.bottom-nav button svg { width: 22px; height: 22px; }
.bottom-nav button.active { color: var(--accent); }

/* ---------- shared bits ---------- */
.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 14px 16px; margin-bottom: 12px;
}
.card h3 { font-size: 13px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--ink-3); margin-bottom: 10px; }
.row { display: flex; align-items: center; }
.row.gap { gap: 10px; }
.grow { flex: 1; }
.muted { color: var(--ink-2); font-size: 13.5px; }
.tiny { color: var(--ink-3); font-size: 12px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--accent); color: var(--accent-ink);
  font-weight: 700; border-radius: 14px; padding: 13px 18px; min-height: 48px;
  transition: transform 0.06s ease;
}
.btn:active { transform: scale(0.97); }
.btn.ghost { background: var(--card-2); color: var(--ink); border: 1px solid var(--border); }
.btn.danger { background: rgba(248, 113, 113, 0.16); color: var(--bad); }
.btn.small { min-height: 38px; padding: 8px 14px; border-radius: 11px; font-size: 14px; }
.btn:disabled { opacity: 0.5; }
.icon-btn {
  width: 42px; height: 42px; min-width: 42px; border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--ink-2); background: transparent;
}
.icon-btn:active { background: var(--card-2); }
.icon-btn svg { width: 20px; height: 20px; }
.icon-btn.accent { color: var(--accent); }

input[type='text'], input[type='number'], input[type='password'], input[type='search'], select {
  width: 100%; background: var(--bg-raise); border: 1px solid var(--border);
  border-radius: 13px; padding: 13px 14px; min-height: 48px; outline: none;
}
input:focus, select:focus { border-color: rgba(251, 191, 36, 0.55); }
label.field { display: block; margin-bottom: 12px; }
label.field span { display: block; font-size: 13px; color: var(--ink-2); margin-bottom: 6px; font-weight: 600; }

.seg { display: flex; background: var(--bg-raise); border: 1px solid var(--border); border-radius: 13px; padding: 3px; }
.seg button { flex: 1; padding: 10px 8px; border-radius: 10px; font-size: 14px; font-weight: 600; color: var(--ink-2); min-height: 42px; }
.seg button.active { background: var(--card-2); color: var(--ink); }

.chip-row { display: flex; gap: 8px; overflow-x: auto; padding: 2px 0 8px; scrollbar-width: none; }
.chip-row::-webkit-scrollbar { display: none; }
.chip {
  white-space: nowrap; background: var(--card); border: 1px solid var(--border);
  padding: 9px 14px; border-radius: 999px; font-size: 14px; font-weight: 600; color: var(--ink-2);
  min-height: 40px; display: inline-flex; align-items: center; gap: 6px;
}
.chip.active { background: rgba(251, 191, 36, 0.14); border-color: rgba(251, 191, 36, 0.45); color: var(--accent); }

/* ---------- home ---------- */
.hero {
  text-align: center; padding: 22px 16px 18px; margin-bottom: 12px;
  background: linear-gradient(180deg, #18264a 0%, var(--card) 100%);
  border: 1px solid var(--border); border-radius: 20px;
}
.hero .pts { font-size: 56px; font-weight: 800; letter-spacing: -0.03em; line-height: 1; }
.hero .pts.neg { color: var(--bad); }
.hero .pts-label { color: var(--ink-2); font-size: 13.5px; font-weight: 600; margin-top: 4px; }
.hero-stats { display: flex; justify-content: center; gap: 8px; margin-top: 14px; flex-wrap: wrap; }
.stat-chip {
  background: rgba(11, 18, 32, 0.55); border: 1px solid var(--border);
  border-radius: 999px; padding: 6px 12px; font-size: 13px; font-weight: 600; color: var(--ink-2);
  display: inline-flex; gap: 5px; align-items: center;
}
.stat-chip b { color: var(--ink); font-weight: 700; }
.stat-chip svg { width: 14px; height: 14px; }
.stat-chip .up { color: var(--good); }
.stat-chip .down { color: var(--bad); }

.quick-grid { display: flex; gap: 8px; overflow-x: auto; padding-bottom: 6px; scrollbar-width: none; }
.quick-grid::-webkit-scrollbar { display: none; }
.quick-tile {
  min-width: 120px; max-width: 150px; text-align: left;
  background: var(--card); border: 1px solid var(--border); border-radius: 14px; padding: 12px;
  display: flex; flex-direction: column; gap: 3px;
}
.quick-tile:active { background: var(--card-2); }
.quick-tile .qt-name { font-weight: 700; font-size: 14px; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.quick-tile .qt-sub { font-size: 12px; color: var(--ink-3); }
.quick-tile .qt-pts { font-size: 12.5px; font-weight: 700; color: var(--accent); }
.quick-tile.food .qt-pts.neg { color: var(--bad); }
.quick-tile.food .qt-pts.pos { color: var(--good); }

.entry {
  display: flex; align-items: center; gap: 11px; padding: 11px 0;
  border-bottom: 1px solid var(--border);
}
.entry:last-child { border-bottom: none; }
.entry .thumb {
  width: 44px; height: 44px; border-radius: 10px; object-fit: cover; background: var(--bg-raise);
  flex-shrink: 0;
}
.entry .thumb.ph { display: flex; align-items: center; justify-content: center; color: var(--ink-3); font-size: 18px; }
.entry .e-main { flex: 1; min-width: 0; }
.entry .e-name { font-weight: 650; font-size: 15px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.entry .e-sub { font-size: 12.5px; color: var(--ink-3); }
.entry .e-pts { font-weight: 800; font-size: 14.5px; white-space: nowrap; }
.entry .e-pts.pos { color: var(--good); }
.entry .e-pts.neg { color: var(--bad); }
.entry .e-actions { display: flex; gap: 2px; }
.entry .icon-btn { width: 38px; height: 38px; min-width: 38px; }

.empty-note { text-align: center; color: var(--ink-3); padding: 18px 8px; font-size: 14px; }

/* ---------- water ---------- */
.ring-wrap { display: flex; align-items: center; gap: 18px; }
.ring-wrap svg.ring { width: 130px; height: 130px; flex-shrink: 0; }
.ring-num { font-size: 24px; font-weight: 800; }
.water-btns { display: flex; flex-direction: column; gap: 8px; flex: 1; }
.water-btns .btn.water-main { background: rgba(56, 189, 248, 0.18); color: var(--water); font-size: 16px; }
.water-presets { display: flex; gap: 8px; }
.water-presets .btn { flex: 1; }

/* ---------- goals ---------- */
.goal-card { margin-bottom: 10px; }
.goal-desc { font-weight: 700; font-size: 15px; flex: 1; padding-right: 8px; }
.goal-meta { font-size: 12px; color: var(--ink-3); margin-top: 2px; }
.pbar { height: 8px; border-radius: 99px; background: var(--bg-raise); overflow: hidden; margin-top: 10px; }
.pbar > i { display: block; height: 100%; border-radius: 99px; background: var(--accent); transition: width 0.4s ease; }
.pbar.done > i { background: var(--good); }
.goal-progress-label { display: flex; justify-content: space-between; margin-top: 6px; font-size: 12.5px; color: var(--ink-2); }
.goal-done-badge { color: var(--good); display: inline-flex; align-items: center; gap: 4px; font-weight: 700; font-size: 13px; }
.goal-done-badge svg { width: 15px; height: 15px; }
.win-row { display: flex; align-items: center; gap: 12px; padding: 10px 0; border-bottom: 1px solid var(--border); }
.win-row:last-child { border-bottom: none; }
.win-row .win-ico { width: 38px; height: 38px; border-radius: 11px; background: rgba(251, 191, 36, 0.12); color: var(--accent); display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
.win-row .win-ico svg { width: 19px; height: 19px; }

/* ---------- library ---------- */
.search-row { position: sticky; top: calc(54px + var(--safe-t)); z-index: 20; background: var(--bg); padding: 6px 0 4px; }
.lib-item { cursor: pointer; }
.lib-more { width: 100%; }
.level-dot { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 4px; }
.level-beginner { background: var(--good); }
.level-intermediate { background: var(--accent); }
.level-expert { background: var(--bad); }

/* ---------- detail sheet ---------- */
.sheet-overlay {
  position: fixed; inset: 0; z-index: 100; background: rgba(4, 8, 16, 0.6);
  opacity: 0; transition: opacity 0.22s ease; display: flex; align-items: flex-end; justify-content: center;
}
.sheet-overlay.open { opacity: 1; }
.sheet {
  width: 100%; max-width: 560px; max-height: 88vh; overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--bg-raise); border-radius: 22px 22px 0 0;
  border: 1px solid var(--border); border-bottom: none;
  transform: translateY(24px); transition: transform 0.22s ease;
  padding-bottom: calc(16px + var(--safe-b));
}
.sheet-overlay.open .sheet { transform: translateY(0); }
.sheet-head { position: sticky; top: 0; display: flex; align-items: center; padding: 10px 10px 8px 18px; background: var(--bg-raise); z-index: 2; }
.sheet-head h2 { font-size: 17px; flex: 1; padding-top: 6px; }
.sheet-grab { position: absolute; top: 6px; left: 50%; transform: translateX(-50%); width: 40px; height: 4px; border-radius: 4px; background: var(--border); }
.sheet-body { padding: 8px 18px 12px; }
.confirm-msg { margin-bottom: 16px; color: var(--ink-2); }

.detail-img { width: 100%; border-radius: 14px; margin-bottom: 12px; background: #fff; }
.preset-row { display: flex; gap: 8px; margin: 10px 0; }
.preset-row .btn { flex: 1; padding: 13px 4px; }
.qty-now { text-align: center; margin: 6px 0 2px; }
.qty-now b { font-size: 34px; font-weight: 800; }
.instructions { color: var(--ink-2); font-size: 14px; white-space: pre-line; margin-top: 10px; }
.collapse-btn { color: var(--accent); font-weight: 600; font-size: 14px; padding: 6px 0; }

/* ---------- history chart (single series, direct interaction) ---------- */
.chart-card svg text { font-family: inherit; }
.chart-tip {
  position: fixed; z-index: 90; pointer-events: none;
  background: #0d1526; border: 1px solid var(--border); border-radius: 10px;
  padding: 8px 11px; font-size: 12.5px; color: var(--ink-2);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
}
.chart-tip b { color: var(--ink); }
.hist-row { display: flex; align-items: baseline; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.hist-row:last-child { border-bottom: none; }
.hist-row .hd { flex: 1; color: var(--ink-2); }
.hist-row .hp { font-weight: 700; min-width: 52px; text-align: right; }
.hist-row .hsub { color: var(--ink-3); font-size: 12.5px; }

/* ---------- toasts ---------- */
.toast-host {
  position: fixed; left: 50%; transform: translateX(-50%);
  bottom: calc(var(--nav-h) + var(--safe-b) + 14px);
  z-index: 200; display: flex; flex-direction: column; gap: 8px; align-items: center;
  width: min(92vw, 480px); pointer-events: none;
}
.toast {
  background: #1d2a47; color: var(--ink); border: 1px solid var(--border);
  padding: 12px 18px; border-radius: 14px; font-size: 14.5px; font-weight: 600;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
  opacity: 0; transform: translateY(10px) scale(0.97); transition: all 0.3s cubic-bezier(0.2, 0.9, 0.3, 1.2);
  max-width: 100%; text-align: center;
}
.toast.show { opacity: 1; transform: translateY(0) scale(1); }
.toast-error { border-color: rgba(248, 113, 113, 0.4); color: #fecaca; }
.toast-celebrate { background: linear-gradient(135deg, #3b2f0a, #1d2a47); border-color: rgba(251, 191, 36, 0.5); }

/* ---------- confetti ---------- */
.confetti-host { position: fixed; inset: 0; z-index: 300; pointer-events: none; overflow: hidden; }
.confetti-host i {
  position: absolute; top: -20px; display: block; border-radius: 2px;
  animation: confetti-fall linear forwards;
}
@keyframes confetti-fall {
  to { transform: translateY(110vh) translateX(var(--drift)) rotate(var(--spin)); opacity: 0.7; }
}

@media (min-width: 480px) {
  .hero .pts { font-size: 64px; }
}